319158939 Motion worksheet Ch 8 CBSE Class 9 PDF

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This is my coursework for this subject i hope it helps for references and notes. Thank you for checking! GENERAL BIOLOGY...

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CLASS-IX

SCIENCE WORKSHEET

CH-8 Motion SOLVE:1. 2. 3. 4.

A train passes through a tunnel in 4min with a speed of 54km/h. What is the length of the tunnel? A car starting from rest attains a speed of 45km/h in 5s. Find the acceleration. The velocity of a car increases from 36km/h to 108 km/h in 10 s. Find its acceleration and the distance covered. Read the following graph carefully and answer the questions given below:60

B

50 40 V(m/s)

30 20 10A D

(i) (ii) (iii) 5. 6.

7.

2 4 6 8 10 12 14 16 18 20 time in minutes Find the acceleration of the body. Which part of the graph shows uniform retardation? What is the distance covered from 5-15min time interval? A body accelerates uniformly from rest to 20 m/s for 4s, then moves with same velocity for the next 6s, after this it retards to come to rest in 2s. Draw velocity-time graph for the motion. An athlete moves along a circular track of radius 0.2 km and completes one revolution in 2 minutes. Determine the speed of the athlete. Find the speed of the body between 4mins and 8mins. 50 40 30 20 Distance(m) 10

2 8. 9.

4

6

8

10 ( time in minutes)

A car travels with a speed of 60km/h during its forward journey and 90km/h during its return journey. Find the average speed of the car . From station X, a train starts from rest and attains a speed of 54 km/h in 10 s, then with the same uniform speed it moves for 8 mins and then apply brakes to stop at station Y in 6 s. Find the distance between the stations.

10. Identify the type of motion from the graphs:-

ѵ ѵ

ѵ

t

t

ѕ t

11. Calculate the distance covered by the body between 10 min and 30 min. 100 90 80 70 60 50 Ѕ

40

Km/h

30 20 10

5

10

15

20

Time( in min)

25

30

t...